Academic literature on the topic 'Quark and lepton masses'

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Dissertations / Theses on the topic "Quark and lepton masses"

1

Malinsky, Michal. "Quark and Lepton Masses and Mixing in Supersymmetric Grand Unified Theories." Doctoral thesis, SISSA, 2005. http://hdl.handle.net/20.500.11767/4198.

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The material is organized as follows: the first chapter is devoted to several remarks on the two basic supersymmetric GUTs - first the minimal SUSY SU(5) is considered and the main shortcomings are pointed-out in brief, and in the second part these issues are addressed concerning a general class of SO(lO) models. This provides a natural motivation to approach and describe shortly the minimal SUSY SO(lO) scheme in the second chapter. The third chapter is dedicated to a detailed study of the correlations among the quark and lepton masses and mixing within the framework with dominant tripl
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2

Ferrara, Valentina. "Extraction of the top quark mass from the total top quark pair production cross section in the single lepton channel." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2013. http://dx.doi.org/10.18452/16727.

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In dieser Arbeit wird eine Messung des totalen {\ttb} Produktions-Wirkungsquerschnitts im Einzellepton-Kanal vorgestellt. Der Wirkungsquerschnitt wird mittels einer Profile-Likelihood-Anpassung von Templates bestimmt, welche \"uber einen Lieklihood-Klassifikator unter Benutzung von vier kinematischen Variablen konstruiert werden. F\"ur ein Top-Quark der Masse $m_t=172.5$ GeV ergibt sich ein gemessener Wirkungsquerschnitt von $178.9 \pm 12$ pb, welcher innerhalb einer Standardabweichung mit den aktuellsten theoretischen Vorhersagen \"uberein stimmt. Um die Massenabh\"angigkeit des experimentell
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Capelli, Laurent. "Étude des dimuons de la région des masses intermédiaires produits dans les collisions d'ions lourds auprès du SPS du CERN." Lyon 1, 2001. http://www.theses.fr/2001LYO10041.

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Dans cette thèse, nous étudions la production des dimuons dans une région de masse entre les résonances et j/ (région des masses intermédiaires, imr) dans les collisions proton-noyau et noyau-noyau de haute énergie. L'expérience Na50, installée auprès de l'accélérateur SPS du CERN, détecte les paires de muons émises dans ces interactions au moyen d'un spectromètre spécifique. La mesure de la centralité des collisions repose sur trois détecteurs indépendants : un calorimètre électromagnétique, un détecteur de multiplicité et un calorimètre a zéro degré. Les résultats des analyses proton-noyau f
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4

Wang, Ping. "Studies of lepton and quark interactions." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/53614.

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Part I Proposed Experimental Tests of the Right-handed Weak Current All possible experiments which test the SU(2)<sub>L</sub> x U(1)<sub>R</sub> x U(1)<sub>B-L</sub> model and SU(2)<sub>L</sub> x SU(2)<sub>R</sub> x U(1)<sub>B-L</sub> model using the LEP e⁺e⁻ collider and HERA e⁻p collider are calculated and the most sensitive experiments are examined. Part II Semi-Phenomenological Theory of (Qq̅) System The (QQ̅) and (Qq̅) mesons are calculated using a QCD motivated potential model. It is discovered that by including a long distance relativistic correction term derived by Grome, the
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Souchlas, Nicholas. "Quark Dynamics and Constituent Masses in Heavy Quark Systems." Kent State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=kent1248013809.

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6

Kimchi, Itamar. "Quark masses : an environmental impact statement." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/44761.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2008.<br>Includes bibliographical references (leaves 63-65).<br>We investigate how the requirement that organic chemistry be possible constrains the values of the quark masses. Specifically, we choose a slice through the parameter space of the Standard Model in which quark masses vary so that as many as three quarks play a role in the formation of nuclei, while keeping fixed the average mass of the two lightest baryons (in units of the electron mass) and the strength of the low-energy nuclear interaction. We classify unive
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Ogasahara, Atsushi. "Discrete flavor symmetry for lepton mixing and quark mixing." 京都大学 (Kyoto University), 2014. http://hdl.handle.net/2433/189340.

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Antusch, Stefan. "The running of neutrino masses, lepton mixings and CP phases." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=969430248.

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9

Rimmer, Steven. "Neutrino masses and lepton flavour violating phenomena in the MSSM." Thesis, Durham University, 2007. http://etheses.dur.ac.uk/2521/.

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The most general supersymmetric model with minimal particle content and an additional discrete Ƶ(_3) symmetry, which allows lepton number violating terms, is considered. In this model, we calculate at the level of one-loop the resulting Majorana neutrino masses and the flavour violating radiative decays of charged leptons, ﺎ→ﺎ’γ. We first study the neutral scalar sector of the model, performing a calculable rotation of the scalar fields to a basis in which the sneutrino vacuum expectation values are zero. Lagrangian parameters are initialised without recourse to assumptions concerning trilinea
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10

Mes, Alexes K. "Light Quark Masses from QCD Finite Energy Sum Rules." Master's thesis, Faculty of Science, 2019. http://hdl.handle.net/11427/30901.

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Due to quark-gluon confinement in QCD, the quark masses entering the QCD Lagrangian cannot be measured with the same techniques one would use to determine the mass of non-confined particles. They must be determined either numerically from Lattice QCD, or analytically using QCD sum rules. The latter makes use of the complex squared energy plane, and Cauchy’s theorem for the correlator of axial-vector divergences. This procedure relates a QCD expression containing the quark masses, with an hadronic expression in terms of known hadron masses, couplings, and lifetimes/widths. Thus, the quark masse
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